<template>
    <div class="shopcar-container">
        <h3>ShopcarContainer</h3>

        <!-- 商品列表项区域 -->
        <div class="goods-list" v-for="(item, i) in goodslist" :key="item.id">
            <div class="mui-card">
			    <div class="mui-card-content">
				    <div class="mui-card-content-inner">
                        <mt-switch
                            v-model="$store.getters.getGoodsSelected[item.id]"
                            @change="selectedChanged(item.id, $store.getters.getGoodsSelected[item.id])"></mt-switch>
                        <img :src="item.thumb_path">
                        <div class="info">
                            <h1>{{ item.title }}</h1>
                            <p>
                                <span class="price">￥{{ item.sell_price }}</span>
                                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                                <a href="#" @click.prevent="remove(item.id, i)">删除</a>
                            </p>
                        </div>
				    </div>
    			</div>
	    	</div>
        </div>

        <!-- 结算区域 -->
        <div class="mui-card">
			<div class="mui-card-content">
				<div class="mui-card-content-inner jiesuan">
                    <div class="left">
                        <p>总计(不含运费)</p>
                        <p>已勾选商品<span class="red">{{ $store.getters.getGoodsCountAndAmount.count }}</span>件, 总价:<span class="red">¥{{ $store.getters.getGoodsCountAndAmount.amount }}</span></p>
                    </div>
                    <mt-button type="danger">去结算</mt-button>
				</div>
			</div>
		</div>


        <p>{{ $store.getters.getGoodsSelected }}</p>
    </div>
</template>

<script>
import numbox from '../subcomponents/shopcar_numbox.vue'

export default {
    data () {
        return {
            goodslist: [] // 购物车中所有商品的数据
        }
    },
    created(){
        this.getGoodsList()
    },
    methods: {
        getGoodsList(){ // 获取购物车商品列表
            // 1. 获取到 store 中所有商品的 id，然后拼接出一个用 逗号 分隔的字符串
            var idArr = []
            this.$store.state.car.forEach(item => idArr.push(item.id))
            // 如果购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
            if(idArr.length<=0){
                return;
            }
            
            this.$http.get('api/goods/getshopcarlist' + idArr.join(",")).then(result => {
                if(result.body.status === 0){
                    this.goodslist = result.body.message
                }
            })
        }
    },
    components: {
        numbox
    },
    remove(id, index){ // 点击删除,把商品从 store 中根据传递的 Id 删除,同时,把当前组件中的 goodslist 中,对应要删除得那个商品,使用 index 来删除
        this.goodslist.splice(index, 1)
        this.$store.commit('removeFromCar', id)
    },
    selectedChanged(id, val){ // 每当点击开关,把最新的开关状态同步到 store 中
        this.$store.commit('updateGoodsSelected', {id, selected: val})
    }
}
</script>

<style lang="scss" scoped>
.shopcar-container {
    background-color: #eee;
    overflow: hidden;
    

    .goods-list {
        .mui-card-content-inner {
            display: flex;
            align-items: center;
        }
        img {
            width: 60px;
            height: 60px;
        }
        h1 {
            font-size: 13px;
        }
        .info {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            .price{
                color: red; 
                font-weight: bold; 
            }
        }
    }

    .jiesuan {
        display: flex;
        justify-content: space-between;
        align-items: center;

        .red {
            color: red;
            font-weight: bold;
            font-size: 16px;
        }
    }
}
</style>